DNA Replication Flashcards
What are the two main stages of cell division?
Nuclear division and Cytokinesis.
What are the two types of nuclear division?
Mitosis and meiosis.
What is Cytokinesis?
A process by which the whole cell divides.
Why must DNA be replicated?
To provide all the daughter cells with the copy of DNA.
When does DNA replication occur in the cell cycle?
Before cell division.
What kind of DNA replication takes place?
Semi-conservative replication.
What is semi-conservative replication?
One strand of DNA is from the parental DNA and the other strand is from the daughter DNA.
What is the daughter DNA?
The DNA that has just been newly synthesised (made).
What is the parental DNA?
The DNA from the original strand.
Why are complimentary base pair’s important in DNA replication?
It enables identical copies of DNA to be created and reduces coping errors that result in mutations.
What enzymes are involved in DNA replication?
DNA helicase and DNA polymerase.
What is required in semi-conservative replication?
A source of chemical energy.
What does the enzyme DNA helicase do?
Breaks the hydrogen bonds between the base pairs of the two strands.
What does DNA helicase cause?
The DNA double helix to unwind.
What do the separated parental strands act as?
Templates for the attachment of nucleotides.
